I am using the April (51-426) version of the Allbest build for my A620. The CHDK works fine. Tonight I tried to add fudgy's fast motion detection script. The script doesn't show up in the list of available scripts that I see when I get to the menu area that allows the script loading.
I must be doing some simple thing incorrectly but I can't figure out what.
(edit)
I realized that I had two "Scripts" folders and once I put the new script in the correct folder (and deleted the extra one) all was well.